GeForce GTX 650 vs Radeon RX 480 4GB

Intro

Compare those specifications to the Radeon RX 480 4GB, which comes with a GPU core clock speed of 1120 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

In theory, the Radeon RX 480 4GB should perform quite a bit faster than the GeForce GTX 650 in general. (explain)

Radeon RX 480 4GB		229376 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 149376 (187%)

Texel Rate

The Radeon RX 480 4GB should be much (more or less 376%) faster with regards to AF than the GeForce GTX 650. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 127424 (376%)

Pixel Rate

The Radeon RX 480 4GB is much (about 112%) more effective at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 18912 (112%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.